LC5823 datasheet(7/24 Pages) SANYO

부품명	LC5823

상세설명	4-Bit Single-Chip Microcontrollers Featuring 4 KB to 8 KB of ROM, 1 Kbit of RAM, and an LCD Driver for Medium Speed Small-Scale Control Applications

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제조업체	SANYO [Sanyo Semicon Device]

홈페이지	https://www.sanyo-av.com/us/

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7 / 24 page

No. 5944-7/24

LC5824, LC5823, LC5822

Continued from preceding page.

Pin No.

I/O

Function

Options

Status at reset

32

33

34

35

SO1

SO2

SO3

SO4

I/O

I/O port

• Input pins used to acquire input data to RAM.

• Output pins used to output RAM data.

• Pull-down resistors are built in.

SO1 to SO3 are also used as the serial interface pins.

• The serial interface function can be selected under program

control.

• Pin functions:

SO1: Serial input

SO2: Serial output

SO3: Serial clock

The serial clock can be taken from either internal or external

sources, and can be set up to detect either rising or falling

edges under program control.

Identical to M1 through

M4

Identical to M1 through

M4

31

ALM

Output

Output-only pin

• A signal modulated by ø0, ø3, or ø4 can be output under

program control.

Low-level output

40

RES

Input

IC internal reset input

• The program counter is set to point to location 00H.

• The reset input level can be set to be either high or low.

• Either a pull-up or a pull-down resistor is built in.

Note: Applications must apply the reset signal level for at least

500 µs to effect a reset.

• Selection of a pull-up or

pull-down resistor

• Selection of active-low

or active-high reset

logic

44

64

1

21

Seg 22

Seg 21

Seg 22

Seg 42

Output

LCD panel drive outputs/general-purpose outputs

• LCD panel drive

(1) Static

(2) 1/2 bias 1/2 duty

(3) 1/2 bias 1/3 duty

(4) 1/2 bias 1/4 duty

(5) 1/3 bias 1/3 duty

(6) 1/3 bias 1/4 duty

One of items (1) through (5) is selected as a mask option.

• General-purpose output ports

(1) CMOS output

(2) p-channel open-drain output

(3) n-channel open-drain output

One of items (1) through (3) is selected as a mask option.

• The adoption of the segment PLA in these microcontrollers

means that there is no need for programs to control the

LCD/general-purpose output states of these pins.

• Output latch control is supported in the oscillator stopped

standby states and during a reset.

• Any combination of LCD and general-purpose output functions

may be used.

• Switching between LCD

drive output and

general-purpose output

• Switching between the

LCD drive type options

—Static

—1/2 bias

1/2 duty

—1/2 bias

1/3 duty

—1/2 bias

1/4 duty

—1/3 bias

1/3 duty

—1/3 bias

1/4 duty

• General-purpose output

type switching

—CMOS

—p-channel open-drain

—n-channel open-drain

• Standby mode output

latch control

• When used for LCD

drive:

—All lit

—All off

* Determined by the

master options

• When used as general-

purpose outputs:

—High level

—Low level

* Determined by the

master options

Note: When a

combination of LCD drive

and general-purpose

outputs is selected, these

pins will be either:

All lit/high-level output, or

All off/low-level output.

• During the reset period,

the LCD drive functions

as static drive.

65

66

79

80

COM1

COM2

COM3

COM4

Output

Common drive outputs for the LCD panel

The table below lists which pins are used in each of the drive

types.

However, note that the listed alternation frequencies are the

typical specifications when ø0 is 32.768 kHz.

41

TST

Input

Test input

• In the QIP-80 version, this pin must be connected to VSS.

• In the chip version, this pin must be left open or connected to

VSS.

—

TEST

—

Test pins.

(These are not used in the device user interface.)

Note: Note that the “!” symbol indicates that the corresponding

common pin cannot be used in that drive type.

* In products with the CF

specifications, the

alternation frequency

signal stops briefly.

Static

1/2 duty

1/3 duty

1/4/duty

COM1

q

COM2

!

q

COM3

!

q

COM4

!

q

Alternation

32 Hz

42.7 Hz

64 Hz

frequency

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LC5823 데이터시트(PDF) 7 Page - Sanyo Semicon Device

LC5823 데이터시트(HTML) 7 Page - Sanyo Semicon Device

유사한 부품 번호 - LC5823

유사한 설명 - LC5823

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